Supplemental nursing services: how much do hospitals really pay?
D003284:Contract Services / Q000191:economics*; D003362:Cost-Benefit Analysis; D003365:Costs and Cost Analysis; D005376:Financial Management / Q000191:economics*; D006742:Hospital Bed Capacity; D009738:Nursing Service, Hospital / Q000191:economics*; D009741:Nursing Staff, Hospital / Q000600:supply & distribution*; D012494:Sampling Studies; D014481:United States